function validate_email(form_id,email) {
 
				var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
				var address = document.forms[form_id].elements[email].value;
				if(reg.test(address) == false) {
 
					alert('Invalid Email Address');
					return false;
				}
				
}